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Finding the Fourth Proportional to 156,272.85, 215,657.57 and 84,652.87

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Solution

The fourth proportional to 156,272.85, 215,657.57 and 84,652.87 is: 116,821.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,272.85 : 215,657.57 = 84,652.87 : x
  2. Step 2: Convert to fraction form
    156,272.85/215,657.57 = 84,652.87/x
  3. Step 3: Cross multiply
    156,272.85x = 215,657.57 × 84,652.87
  4. Step 4: Simplify right side
    156,272.85x = 18,256,032,237.73
  5. Step 5: Solve for x
    x = 18,256,032,237.73/156,272.85
  6. Step 6: Final answer
    x = 116,821.52

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.